iteration with bioplastic 2

In this post I have tested what happens when I use an excess of maize starch. After a night of drying this was the result. the mixture feels wet and is not bound in any way. test failed

The cracking probably comes from the evaporation of water. If the material is weak, it can’t support the shrinkage and breaks.

What do you mean by an excess of maize starch? Which recipe and quantities did you use?